Hi- we’ve just booked the Voyager of the areas for next August stopping in Chan May and Nha Trang. I also emailed the Vietnamese Embassy who informed me about the multiple entry visa but the email is cutely worded as it talks about passport control etc. which we won’t go through. Royal still don’t have the UK and France lister on the 15 day visa waiver scheme on their website but if you search some of the forums the UK and France as not requiring a visa for Vietnam on other cruiselines like Celebrity. Celebrity also only charge their passengers 6$ for the visa on board as it’s a “Group Visa”.